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Lisa [10]
2 years ago
15

Directions:

Mathematics
1 answer:
Nadya [2.5K]2 years ago
4 0
1. The first angle is a supplementary angle , which equals to 180 degrees.

2. The second angle is a complementary angle which is 90 degrees.

hope this helps !
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Eight values have a mean of 7. a ninth value is added. the new mean is 9. what is the new value
My name is Ann [436]

Answer:

25 because the 8 values must times with 7 and will get 56. when the ninth value added , let the ninth value as y , 56+y , the new mean is 9 . so it will be like this , 56+y over 9 times with 9

4 0
2 years ago
Michaels test scores for this semester were 83,80,91,74,66,99,87,72,95,98. What was the median of his scores
atroni [7]

Answer:

85

Step-by-step explanation:

Write the numbers in order

66, 72, 74, 80, 83, 87, 91, 95, 98, 99

Find the middle number

83 and 87 are in the middle, so find the mean of them. 83+87= 170

170/2 = 85.

5 0
2 years ago
Read 2 more answers
What is the value of y in the equation 5x+2y=20, when x=0.3
Rasek [7]

5x+2y=20

Substitute 0.3 for x

5(0.3)+2y=20

Multiply 5 by 0.3

1.5+2y=20

Subtract 1.5 from both sides

2y=18.5

Divide 2 on both sides

Final Answer: y= 9.25

8 0
3 years ago
The cross country coach later determine that the length of the football field is 120 yards. All students must run five laps. Usi
Sedaia [141]

Answer:

25.2

Step-by-step explanation:

3 0
2 years ago
Can someone give me the answer for this one
Mrac [35]
The answer is C.

Hope that helps you.
6 0
3 years ago
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